> Sorry, I don't understand what you mean here. Do you mean you do have the grub-efi-amd64 package installed, or you don't have it installed?
Yes, this package installed. > The Windows bootloader will not boot anything not signed by the Microsoft key, even if Secure Boot is disabled in the firmware. If your Ubuntu install has not yet been set up for Secure Boot, you will need to disable Secure Boot, and manually choose Ubuntu from a firmware boot menu. My Ubuntu worked fine with Secure Boot in 13.04. But now in 13.10 if I enable secure boot in BIOS, I have Invalid EUFI signature error. > If you installed grub-efi-amd64, did you also try again to install shim-signed after that? This should be the last step to enable Secure Boot on your Ubuntu install. Yes, this package also installed. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1242271 Title: package shim-signed 1.3+0.4-0ubuntu3 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shim-signed/+bug/1242271/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
